51043039 has 2 divisors, whose sum is σ = 51043040. Its totient is φ = 51043038.

The previous prime is 51043033. The next prime is 51043043. The reversal of 51043039 is 93034015.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51043039 - 2⁵ = 51043007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51043033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25521519 + 25521520.

It is an arithmetic number, because the mean of its divisors is an integer number (25521520).

Almost surely, 2^51043039 is an apocalyptic number.

51043039 is a deficient number, since it is larger than the sum of its proper divisors (1).

51043039 is an equidigital number, since it uses as much as digits as its factorization.

51043039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 51043039 is about 7144.4411257984. The cubic root of 51043039 is about 370.9472659673.

The spelling of 51043039 in words is "fifty-one million, forty-three thousand, thirty-nine".